The deal will add the Forester, Legacy and Outback to the National fleet, and the Impreza WRX will be added to its Guy Salmon Prestige Rental fleet.
Its decision comes at a time when several manufacturers have lost faith in the profitability of daily rental business. Fiat, Citroën and Peugeot have all made moves to withdraw from the sector.
However some carmakers see it as a good opportunity to get more of their vehicles on the roads.
“Subaru is looking to build brand awareness and strengthen its position and desirability in the corporate market,” says Harvey France, Subaru’s national fleet and used car sales manager.
“As the UK’s leading daily rental provider, we believe that National can effectively translate the quality principles that underpin the Subaru brand.”